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(No Model.)

J. GRAGEY 8a G. W. KEEOH.

LUBRIGATOR.

No. 405,995. Patented June 25, 1889.

MW T m N. PETERS. Pholo-Uthognplmr, wuhinmm 0 C.

UNITED STATES PATENT OFFICE.

JAMES GRAOEY AND GEORGE IV. KEECH, OF ST. LOUIS, MISSOURI, ASSIGNORS, BY MESNE ASSIGNMENTS, TO SAID GRAOEY AND AARON STRAUS, OF SAME PLACE.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 405,995, dated June 25, 1889.

Application filed March 16, 1888. Serial No. 267,369. (No model.)

To all whom, it may concern.-

Be it known that we, JAMES GRACEY and GEORGE IV. KEECH, of St. Louis, Missouri, have jointly made a new and useful Improvement in llydraulic-Cylinder Lubricators, of which the following is a full, clear, and exact description.

This invention relates to lubricatingbrushes which move with a piston-rod and to lubricate the interior of the cylinder.

The said invention consists in the combination of such a brush and the piston-rod with certain devices for holding said brush, constructed and arranged substantially as hereinafter set forth and claimed.

Figure 1 is a side elevation of a hydraulic cylinder having the improvement, portions of the cylinder-shell being broken away to exhibit the interior construction; Fig. 2, a

cross-section of the cylinder, showing one form of the lubricator; Fig. 3, a similar section showing another form of the lubricator; and Figs. l and 5, details, being, respectively, sections at right angles to Fig. 2 through the clamping devices, taken at the side of one of the bolts (Z and at the side of. one of the spokes d. The last four views are upon an enlarged scale.

The same letters of reference denote the 0 same parts.

The cylinder A is of any of the customary formsof a hydraulic cylinder, saving as it is modified or su 'iplemented by the improve ment in question.

5 B represents the piston, and (l the pistonrod.

D represents the lubricator. It may assume many forms withoutdeparting from the principle of the improvement. In the pres- 0 ent instance it composed substantially of a frame attached to the piston-rod and carrying a brush or analogous construction,which is shaped to fit and to come into contact with the interior surface a of the cylinder, and

suited for receiving and holding a lubricant and for applying it to the surface a as the lubrieator moves with the piston-rod through the cylinder.

The frame is mainly a collar (Z, clamped to the piston-rod and having a series of spokes or arms (1 inserted in it. The arms (1 at their outer ends carry a circular or semicircular rim (Z (Z composed of two parts, which, by means of the bolts (1 are fastened to the arms (1, and so as, also, to hold between them the brush (1".

The brush is of some suitable material such as feltfor holding a lubricant and for transferring it to the surface a of the cylinder without injuring the surface. The nuts d d aid in holding the rim (Z (Z in place upon the arms (1.

The operation of the device is as follows: The piston rod is drawn to the front end a of the cylinder, and the lubricator D is thereby brought into position for receiving the lubricant. In practice the lubricator needs to be charged with the lubricant only at extended intervals-say two or three times a week in the case of the ordinary hydraulic cylinder. o At every stroke of the piston-rod the brush comes in contact with. the surface a, and the lubricant is applied thereto. The lubricant is thus applied easily and regularly. In the case of horizontal cylinders it not necessary 7 5 to extend the brush entirely around the cylinder, and the form of brush shown in Fig. 2 answers well, for thereby the lubricant is applied to the upper portion of the cylinder, and enough of the lubricant finds its way downward to lubricate the entire cylinder.

In the case of upright cylinders the form of brush shown in Fig. 3 is used-nan1ely, one which extends all around the cylinder.

In some instances the brush is attached directl y to the piston, and,while the brush in the present case is attached to the piston-rod, we consider the one substantially the equivalent of the other. The cylinder shown is made open at the end a. '1 represents the water in the cylinder.

e el'aim In combination with a cylindei and piston- WVitnessour hands this 14th day of March, rod, a series of spokes 01', extending outward 1888. from the latter and screw-threaded at their outer ends, a curved rim in two parts, nuts JAMES GRACEY. 5

d on said rods at the inner and outer faces GEORGE W. KEEOH. of said rim, the bolt 01 for holding the plates together, and a brush d held between the Witnesses:

parts of said rim and in contact with the in C. D. MOODY, ner face of said cylinder, for the purpose set GEO. J. CHAPMAN. 1o forth; 

